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nmdcat.online June 27, 2026

In the chair conformation of β-D-glucose, the most stable form, the hydroxyl groups and the hydroxymethyl group are predominantly oriented in the

A. Axial positions to minimize steric hindrance
B. Equatorial positions to minimize steric hindrance
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C. Cis configuration relative to the ring oxygen
D. Random arrangement with no energy preference

📝 Explanation

In the chair conformation, bulky substituents preferentially occupy equatorial positions (pointing out from the ring) rather than axial positions (perpendicular to the ring). β-D-glucose has all its -OH and -CH₂OH groups in equatorial positions, making it the most stable and abundant hexose.

📖 Additional Information

  • Axial positions to minimize steric hindrance
  • Equatorial positions to minimize steric hindrance
  • Cis configuration relative to the ring oxygen
  • Random arrangement with no energy preference

In the chair conformation, bulky substituents preferentially occupy equatorial positions (pointing out from the ring) rather than axial positions (perpendicular to the ring). β-D-glucose has all its -OH and -CH₂OH groups in equatorial positions, making it the most stable and abundant hexose.

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